1994 5.7 factory manifolds or shorty headers?

[indexcow]

Discovered a broken manifold today on my 94 5.7

Should I go with factory style manifolds or is there a good set of headers that are carb compliant that you guys would recommend instead? I’m in California

 

[PlayingWithTBI]

Should I go with factory style manifolds or is there a good set of headers that are carb compliant that you guys would recommend instead? I’m in California

Summit Racing G9015 headers have A.I.R. ports and are CARB EO compliant.

www.summitracing.com/parts/sum-g9015

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[SNCTMPL]

The Summit headers are carb compliant. I have used a couple of sets with good luck.

 

[Joe Dirte]

I have the summit ones on my 96. Fit right up to factory y pipe great. Just get a good quality gasket. The ones that came with it burnt out in less than 100 miles. Also I run the summit ceramic shorties on my 98. No leaks so far. Changing your plugs will be a real pain though. I'm runnin accel shorty plugs and bought an SLP spark plug socket that was made for the old LT1s in the 90s. I also welded the egr Ports on the 96 and ran 95 headers for headers on my 98 since I deleted egr.

 

[indexcow]

How do you guys go about removing the temporary paint and getting proper high temp paint on them? Or do I even need to worry about painting them?

 

[Schurkey]

1. Don't expect a big improvement in power with shorty headers. I think the bigger gain is getting a GOOD Y-pipe and high-flow catalyst rather than mediocre headers.

2. If you buy stainless or pre-coated headers, you don't need to be concerned with the paint. Or ship the headers to a coating company.

 

[indexcow]

That’s good to know, I’m not looking for gainz but since I need to buy new manifolds anyways I was seeing if it’s worth it to go with headers. At this point I’m leaning towards a set of dorman manifolds

 

[letitsnow]

That’s good to know, I’m not looking for gainz but since I need to buy new manifolds anyways I was seeing if it’s worth it to go with headers. At this point I’m leaning towards a set of dorman manifolds

At one point I put inexpensive replacement manifolds from rock auto on mine, and they worked fine.

 

[PlayingWithTBI]

How do you guys go about removing the temporary paint and getting proper high temp paint on them? Or do I even need to worry about painting them?

I didn't bother with mine and they're just fine after 4+ years living in the desert. I recently wrapped them to help keep heat out of the engine bay, and help prevent melting the wires, we'll see how well they hold up. I'm using Mr Gasket copper gaskets on mine.

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[Erik the Awful]

I bought cheap headers and tried to clean the paint off them. I think the only way to really clean them is to use a media blaster. I used some ceramic header paint, and it hasn't held up. HPC is across town from me, so next time I'll probably just take my headers to them for stripping and coating.